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Working product with sustainable legacies

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This commit is contained in:
Artsiom Dzenisiuk
2025-10-18 20:44:30 +02:00
parent 65a1c9f159
commit a392132fa9
8 changed files with 178 additions and 54 deletions
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21
README.md Normal file
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@@ -0,0 +1,21 @@
Geachte speler,
Heb je wel eens rijk willen zijn?
Vast wel. Mensen met goede bedoelingen (zoals ik) hebben jouw daarom
meermaals geappt op Telegram om je te vragen of je bij een bedrijf
XYZ wilt werken. De werktijden zijn slechts 30 min per week, en je
verdient 500 euro per dag!
Misschien twijfel je nog. Geen probleem! Voor kleine spelers zoals
jij hebben we een spel genaamd 'gambling-curses'. In dit spel zie je
een live grafiek van de laatste Bitcoin-prijs, en heb je 10.000
euro op je bankaccount. Je kunt gemakkelijk traden door op 's' en
'b' te klikken. ('s' betekent SELL, 'b' betekent BUY).
Aangezien de cryptomarkt zeker NIET gamblen is, en er wel degelijk
een strategie achter zit, kun je zo gaan oefenen.
Met vriendelijke groet,
Crypto/Dropshipping Guru

61
box.c
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@@ -17,13 +17,14 @@
#include "util.h"
static void draw_rectangle(double x, double y, double width, double height);
static void draw_chart(struct box *, double x, double y, double width,
double height);
static void draw_container(struct box *, double x, double y, double width,
double height);
static void draw_button(struct box *, double x, double y, double width,
double height);
static void draw_rectangle(unsigned int x, unsigned int y, unsigned int width,
unsigned int height);
static void draw_chart(struct box *, unsigned int x, unsigned int y,
unsigned int width, unsigned int height);
static void draw_container(struct box *, unsigned int x, unsigned int y,
unsigned int width, unsigned int height);
static void draw_button(struct box *, unsigned int x, unsigned int y,
unsigned int width, unsigned int height);
void
@@ -34,44 +35,41 @@ append_box(struct box *parent, struct box *child)
static void
draw_rectangle(double fx, double fy, double fwidth, double fheight)
draw_rectangle(unsigned int x, unsigned int y, unsigned int width,
unsigned int height)
{
size_t x = llround(fx);
size_t y = llround(fy);
size_t w = llround(fwidth) - 1;
size_t h = llround(fheight) - 1;
/* corners */
ui_char(x, y, '+');
ui_char(x, y + h, '+');
ui_char(x + w, y + h, '+');
ui_char(x + w, y, '+');
ui_char(x, y + height, '+');
ui_char(x + width, y + height, '+');
ui_char(x + width, y, '+');
/* vertical borders */
for (size_t i = 1; i < h; i++) {
for (size_t i = 1; i < height; i++) {
ui_char(x, y + i, '|');
}
for (size_t i = 1; i < h; i++) {
ui_char(x + w, y + i, '|');
for (size_t i = 1; i < height; i++) {
ui_char(x + width, y + i, '|');
}
/* horizontal borders */
for (size_t i = 1; i < w; i++) {
for (size_t i = 1; i < width; i++) {
ui_char(x + i, y, '-');
}
for (size_t i = 1; i < w; i++) {
ui_char(x + i, y + h, '-');
for (size_t i = 1; i < width; i++) {
ui_char(x + i, y + height, '-');
}
}
static void
draw_chart(struct box *chart, double x, double y, double width, double height)
draw_chart(struct box *chart, unsigned int x, unsigned int y,
unsigned int width, unsigned int height)
{
long int actual_diff;
double diff, price;
@@ -98,7 +96,8 @@ draw_chart(struct box *chart, double x, double y, double width, double height)
static void
draw_button(struct box *b, double x, double y, double width, double height)
draw_button(struct box *b, unsigned int x, unsigned int y, unsigned int width,
unsigned int height)
{
ui_color_on(b->color);
draw_rectangle(x, y, width, height);
@@ -108,10 +107,11 @@ draw_button(struct box *b, double x, double y, double width, double height)
static void
draw_container(struct box *b, double x, double y, double width, double height)
draw_container(struct box *b, unsigned int x, unsigned int y,
unsigned int width, unsigned int height)
{
double current, length, total_fills, pixels_per_fill;
struct box *child;
unsigned int current, i, length, total_fills, pixels_per_fill;
struct box *child;
switch (b->type) {
case BOX_VERTICAL:
@@ -125,13 +125,13 @@ draw_container(struct box *b, double x, double y, double width, double height)
}
total_fills = 0;
for (size_t i = 0; i < b->length; i++) {
for (i = 0; i < b->length; i++) {
total_fills += b->children[i]->fills;
}
pixels_per_fill = length / total_fills;
for (size_t i = 0; i < b->length; i++) {
for (i = 0; i < b->length; i++) {
child = b->children[i];
length = child->fills * pixels_per_fill;
@@ -206,7 +206,8 @@ new_vertical_box(void)
void
draw_box(struct box *b, double x, double y, double width, double height)
draw_box(struct box *b, unsigned int x, unsigned int y, unsigned int width,
unsigned int height)
{
switch (b->type) {
case BOX_BUTTON:

5
box.h
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@@ -22,7 +22,7 @@ enum box_type {
struct box {
enum box_type type;
enum ui_color color;
double fills;
unsigned int fills;
union {
/* button */
@@ -47,4 +47,5 @@ struct box *new_chart_box(struct chart *);
void append_box(struct box *parent, struct box *child);
void draw_box(struct box *, double x, double y, double width, double height);
void draw_box(struct box *, unsigned int x, unsigned int y, unsigned int width,
unsigned int height);

15
chart.c
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@@ -6,11 +6,14 @@
#include <stdlib.h>
#include <string.h>
#include "chart.h"
#include "util.h"
struct chart new_chart(unsigned int length)
struct chart
new_chart(unsigned int length)
{
unsigned int i;
double price;
@@ -25,8 +28,16 @@ struct chart new_chart(unsigned int length)
for (i = 0; i < length; i++) {
chart.prices[i] = price;
price += (double)rand() / RAND_MAX - 0.4;
price += (double)rand() / RAND_MAX * 4 - 2;
}
return chart;
}
void
update_chart(struct chart *chart)
{
memmove(chart->prices, chart->prices + 1, (chart->length - 1) * sizeof(double));
chart->prices[chart->length - 1] = chart->prices[chart->length - 2] + (double)rand() / RAND_MAX * 4 - 2;
}

1
chart.h
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@@ -14,4 +14,5 @@ struct chart {
};
void update_chart(struct chart *);
struct chart new_chart(unsigned int length);

116
main.c
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@@ -5,22 +5,35 @@
*/
#include <curses.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <curses.h>
#include <time.h>
#include "box.h"
#include "ui.h"
#include "util.h"
int
main(void)
enum game_state {
GAME_IDLE, /* can buy AND sell */
GAME_BOUGHT, /* cannot buy again */
GAME_SOLD, /* cannot sell again */
};
struct game {
unsigned int dollars;
struct chart chart;
enum game_state state;
};
struct box *
initialize_ui_from_game(struct game *game)
{
struct box *ui, *top, *bottom, *left, *right, *buy, *sell, *scam,
struct box *ui, *top, *bottom, *left, *right, *buy, *sell, *bank,
*title, *desc;
struct chart chart;
ui_init();
title = new_button_box("Bitcoin");
desc = new_button_box("A crypto-scam :-)");
@@ -29,21 +42,25 @@ main(void)
append_box(top, title);
append_box(top, desc);
chart = new_chart(400);
left = new_chart_box(&chart);
left = new_chart_box(&game->chart);
left->fills = 5;
buy = new_button_box("buy");
buy->color = UI_GREEN;
sell = new_button_box("sell");
sell->color = UI_RED;
scam = new_button_box("scam");
char *bank_text = emalloc(500);
sprintf(bank_text, "YOU HAVE $%d.", game->dollars);
bank = new_button_box(bank_text);
sell->color = UI_BLUE;
right = new_vertical_box();
append_box(right, buy);
append_box(right, sell);
append_box(right, scam);
append_box(right, bank);
bottom = new_horizontal_box();
bottom->fills = 3;
@@ -54,11 +71,82 @@ main(void)
append_box(ui, top);
append_box(ui, bottom);
draw_box(ui, 0, 0, ui_width(), ui_height());
return ui;
}
ui_refresh();
sleep(300);
/*
* Buy 50 coins, price = last price in chart.
*/
void game_buy(struct game *game)
{
if (game->state != GAME_IDLE) {
return;
}
game->dollars -= game->chart.prices[game->chart.length - 1] * 50;
game->state = GAME_BOUGHT;
}
/*
* Sell 50 coins, price = last price in chart.
*/
void game_sell(struct game *game)
{
if (game->state != GAME_BOUGHT) {
return;
}
game->dollars += game->chart.prices[game->chart.length - 1] * 50;
game->state = GAME_IDLE;
}
int
main(void)
{
int framerate;
struct box *ui;
struct game game;
framerate = 10;
game.state = GAME_IDLE;
game.dollars = 10000;
game.chart = new_chart(200);
ui_init();
ui = initialize_ui_from_game(&game);
for (;;) {
draw_box(ui, 0, 0, ui_width(), ui_height());
ui_refresh();
clock_t current = clock();
clock_t max = current + CLOCKS_PER_SEC * (1.0/framerate);
for (;;) {
switch (getch()) {
case 'b':
game_buy(&game);
break;
case 's':
game_sell(&game);
break;
}
if (clock() >= max) {
break;
}
}
update_chart(&game.chart);
ui_clear();
ui = initialize_ui_from_game(&game);
}
ui_end();
}

5
ui.c
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@@ -22,6 +22,7 @@ ui_init(void)
init_pair(UI_BLUE, COLOR_BLUE, COLOR_BLACK);
cbreak();
noecho();
nodelay(stdscr, TRUE);
nonl();
intrflush(stdscr, FALSE);
keypad(stdscr, TRUE);
@@ -34,12 +35,12 @@ void ui_end()
endwin();
}
void ui_string(size_t x, size_t y, char *s)
void ui_string(unsigned int x, unsigned int y, char *s)
{
mvaddstr(y, x, s);
}
void ui_char(size_t x, size_t y, char c)
void ui_char(unsigned int x, unsigned int y, char c)
{
mvaddch(y, x, c);
}

4
ui.h
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@@ -22,8 +22,8 @@ void ui_end(void);
void ui_color_on(enum ui_color);
void ui_color_off(enum ui_color);
void ui_char(size_t x, size_t y, char c);
void ui_string(size_t x, size_t y, char *s);
void ui_char(unsigned int x, unsigned int y, char c);
void ui_string(unsigned int x, unsigned int y, char *s);
size_t ui_width(void);
size_t ui_height(void);